1. The diagrams show pollen grains from three different species of plant as they appear under the microscope. The diagrams are all to the same scale. *

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

What does the positioning of transcription factors determine?

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm